TESS Spots a Hot Jupiter with an Inner Transiting Neptune
Artikel i vetenskaplig tidskrift, 2020
Hot Jupiters are rarely accompanied by other planets within a factor of a few in orbital distance. Previously, only two such systems have been found. Here, we report the discovery of a third system using data from the Transiting Exoplanet Survey Satellite (TESS). The host star, TOI-1130, is an eleventh magnitude K-dwarf in Gaia G-band. It has two transiting planets: a Neptune-sized planet (3.65 ± 0.10 R\oplus) with a 4.1 days period, and a hot Jupiter (1.50-0.22+0.27 RJ) with an 8.4 days period. Precise radial-velocity observations show that the mass of the hot Jupiter is 0.974-0.044+0.043 MJ. For the inner Neptune, the data provide only an upper limit on the mass of 0.17 MJ (3σ). Nevertheless, we are confident that the inner planet is real, based on follow-up ground-based photometry and adaptive-optics imaging that rule out other plausible sources of the TESS transit signal. The unusual planetary architecture of and the brightness of the host star make TOI-1130 a good test case for planet formation theories, and an attractive target for future spectroscopic observations.
Extrasolar rocky planets
Extrasolar gas giants
Exoplanet astronomy
Hot Jupiters
Exoplanets
Författare
Chelsea X. Huang
Massachusetts Institute of Technology (MIT)
S. N. Quinn
A. Vanderburg
The University of Texas at Austin
Juliette Becker
California Institute of Technology (Caltech)
Joseph E. Rodriguez
Francisco J. Pozuelos
Universite de Liège
Davide Gandolfi
Universita degli Studi di Torino
G. Zhou
Andrew W. Mann
The University of North Carolina System
Karen A. Collins
Ian Crossfield
Massachusetts Institute of Technology (MIT)
Khalid Barkaoui
Kevin I. Collins
Malcolm Fridlund
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
Michaël Gillon
Erica J. Gonzales
Maximilian N. Günther
Massachusetts Institute of Technology (MIT)
Todd J. Henry
Steve B. Howell
Hodari-Sadiki James
Wei-Chun Jao
Emmanuel Jehin
Eric L. N. Jensen
Stephen R. Kane
Jack J. Lissauer
Elisabeth Matthews
Massachusetts Institute of Technology (MIT)
Rachel A. Matson
Leonardo A. Paredes
Joshua E. Schlieder
K.G. Stassun
Avi Shporer
Massachusetts Institute of Technology (MIT)
Lizhou Sha
Massachusetts Institute of Technology (MIT)
Thiam-Guan Tan
Iskra Georgieva
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
Savita Mathur
Enric Palle
Carina Persson
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
Vincent Van Eylen
George Ricker
Massachusetts Institute of Technology (MIT)
R. Vanderspek
Massachusetts Institute of Technology (MIT)
D.W. Latham
Joshua N. Winn
S. Seager
Massachusetts Institute of Technology (MIT)
Jon M. Jenkins
Christopher J. Burke
Robert Goeke
Massachusetts Institute of Technology (MIT)
Stephen Rinehart
Mark E. Rose
E. B. Ting
Guillermo Torres
Ian Wong
Astrophysical Journal Letters
2041-8205 (ISSN) 2041-8213 (eISSN)
Vol. 892 1 L7Exoplaneter från rymden - CHEOPS och PLATO, ESA's nästa två missioner
Rymdstyrelsen (174/18), 2017-01-01 -- 2022-12-31.
Ämneskategorier
Astronomi, astrofysik och kosmologi
Fundament
Grundläggande vetenskaper
DOI
10.3847/2041-8213/ab7302